The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2006
Filed:
Jun. 15, 2004
Kochan Ju, Fremont, CA (US);
You Feng Zheng, San Jose, CA (US);
Mao-min Chen, San Jose, CA (US);
Cherng-chyi Han, San Jose, CA (US);
Charles Lin, San Jose, CA (US);
Kochan Ju, Fremont, CA (US);
You Feng Zheng, San Jose, CA (US);
Mao-Min Chen, San Jose, CA (US);
Cherng-Chyi Han, San Jose, CA (US);
Charles Lin, San Jose, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A magnetic read head with reduced side reading characteristics is described. This design combines use of a current channeling layer (CCL) with stabilizing longitudinal bias layers whose magnetization direction is canted relative to that of the free layer easy axis and that of the pinned layer (of the GMR). This provides several advantages: First, the canting of the free layer at the side region results in a reduction of side reading by reducing magnetic sensitivity in that region. Second, the CCL leads to a narrow current flow profile at the side region, therefore producing a narrow track width definition. A process for making this device is described. Said process allows some of the requirements for interface cleaning associated with prior art processes to be relaxed.